The present invention relates to novel 3-oxindole derivatives, to a process for their preparation and to the use of said derivatives as dyes for manufacturing pH sensitive textiles and as indicators in titration methods. The invention also relates to a method to manufacture pH sensitive textiles and to textiles so obtained.

The present invention relates to novel 3-oxindole derivatives, to a process for their preparation and to the use of said derivatives as dyes for manufacturing pH sensitive textiles and as indicators in titration methods. The invention also relates to a method to manufacture pH sensitive textiles and to textiles so obtained.

A method of producing a photochromic resin body includes a first step, a second step and a third step. In the first step, a sublimable photochromic dye having sublimability is applied to a base body so as to obtain a function-adding base body. In the second step, the function-adding base body obtained in the first step is set to face a resin body, the function-adding base body is heated to sublimate the sublimable photochromic dye applied to the function-adding base body, and the sublimable photochromic dye is deposited on the resin body. In the third step, the resin body on which the sublimable photochromic dye is deposited in the second step is heated to fix the sublimable photochromic dye on the resin body.

A method of producing a photochromic resin body includes a first step, a second step and a third step. In the first step, a sublimable photochromic dye having sublimability is applied to a base body so as to obtain a function-adding base body. In the second step, the function-adding base body obtained in the first step is set to face a resin body, the function-adding base body is heated to sublimate the sublimable photochromic dye applied to the function-adding base body, and the sublimable photochromic dye is deposited on the resin body. In the third step, the resin body on which the sublimable photochromic dye is deposited in the second step is heated to fix the sublimable photochromic dye on the resin body.

The present invention relates to novel 3-oxindole derivatives, to a process for their preparation and to the use of said derivatives as dyes for manufacturing pH sensitive textiles and as indicators in titration methods. The invention also relates to a method to manufacture pH sensitive textiles and to textiles so obtained.

The present invention relates to novel 3-oxindole derivatives, to a process for their preparation and to the use of said derivatives as dyes for manufacturing pH sensitive textiles and as indicators in titration methods. The invention also relates to a method to manufacture pH sensitive textiles and to textiles so obtained.

A method of producing a photochromic resin body includes a first step, a second step and a third step. In the first step, a sublimable photochromic dye having sublimability is applied to a base body so as to obtain a function-adding base body. In the second step, the function-adding base body obtained in the first step is set to face a resin body, the function-adding base body is heated to sublimate the sublimable photochromic dye applied to the function-adding base body, and the sublimable photochromic dye is deposited on the resin body. In the third step, the resin body on which the sublimable photochromic dye is deposited in the second step is heated to fix the sublimable photochromic dye on the resin body.

A method of producing a photochromic resin body includes a first step, a second step and a third step. In the first step, a sublimable photochromic dye having sublimability is applied to a base body so as to obtain a function-adding base body. In the second step, the function-adding base body obtained in the first step is set to face a resin body, the function-adding base body is heated to sublimate the sublimable photochromic dye applied to the function-adding base body, and the sublimable photochromic dye is deposited on the resin body. In the third step, the resin body on which the sublimable photochromic dye is deposited in the second step is heated to fix the sublimable photochromic dye on the resin body.

An organic EL display device includes a photosensitive resin composition including an (A) alkali-soluble resin, a (B) coloring agent, a (C) radical polymerizable compound, and a (D) photopolymerization initiator. The (A) alkali-soluble resin is an (A-1) alkali-soluble resin having a carboxy group. A sum of the content of at least one of a metal element and a halogen element in a non-volatile component measured by time-of-flight secondary ion mass spectrometry in a cured product formed by curing the photosensitive resin composition is 110.sup.17 atom/cm.sup.3 or larger and 110.sup.22 atom/cm.sup.3 or smaller. In an organic EL element constituted of at least a substrate, a first electrode, a second electrode, a light emitting pixel, a flattening layer, and a pixel division layer, the photosensitive resin composition is arranged in at least one of the flattening layer and the pixel division layer.

The present invention relates to optical articles and optical filtering coatings comprising at least one absorbing dye comprising one of the groups of formulae of formulae (I), (II), (III) and (IV), wherein R represents an aryl or alkyi group, and the groups of formulae (I), (II), (III) and (IV) have at least one carbon atom substituted with a group chosen from OH, CN, bromo, NO.sub.2, alkoxy, aryloxy, COOH, CHO, COalkyl, COaryl, haloalkyl, SH, S-alkyl, S-aryl, SO.sub.2alkyl, OSO.sub.2alkyl, SO.sub.2aryl, OSO.sub.2aryl and sulfonamide, or have at least two carbon atoms substituted with a chloro group.

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